{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950191,-0.311669,0.000000,0.000000,0.174235,-0.531193,0.829142,0.000000,-0.257873,0.786183,0.561621,0.000000,-1646489.499051,5019685.780798,3561875.193095,1],    "boundingVolume": {    "region": [1.887676,0.596239,1.887814,0.596447,0.000000,8.813532]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/3/1/2_1397256.b3dm"}}}